chore: include README

README.md

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+<img align="right" src="https://www.wireguard.com/img/icons/favicon-256.png" />
+
+# wg-lua
+
+A lua implementation of the wireguard keygen algorithm.
+
+```lua
+local wg = require("wg").wireguard
+local keypair = wg:generateKeypair()
+
+print("Public Key: ", keypair.publicKey)
+print("Private Key: ", keypair.privateKey)
+
+print(wg:generatePublicKey(keypair.privateKey))
+```
+## Methods
+
+- #### Wireguard:generateKeypair() -> { publicKey: string, privateKey: string }
+    > Generates a wireguard keypair consisting of a public and private key.
+- #### Wireguard:generatePublicKey(privateKey: number[]) -> string
+    > Generates a wireguard public key, given a private key.
+
+## Development
+
+To get started, install the required dependencies with:
+```console
+aftman install
+pnpm i
+```
+Run tests with:
+```console
+pnpm test
+```
+
+Run any luau file with:
+```console
+./lunew <path>
+```
+
+Run an example with:
+
+```console
+./lunew example <example-name>
+```
+```